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Ministère de la Culture et de la Communication
Université Versailles Saint-Quentin


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GUERRERO Patricio

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+ 33 1 69 35 99 23
patricio.guerrero-prado « at » synchrotron-soleil.fr

Research topics

3D reconstruction from Compton scattering : Radon transform, inverse problems, image processing.

Current Research

Some patrimonial objects are characterized by a big relation w/t : the width and height are too big related to its thickness. The heterogeneous nature of the materials of these objects suggest a 3D analysis but classical modalities of tomography can not be used due to the "thin" geometry of the objet.

X-ray tomography regards photoelectric absorption or coherent scattering phenomena. This kind of tomography is predominant because of our knowledge of the related mathematical formulation and its inverse problem : the Radon transform.
Incoherent (Compton) scattering is another kind of interaction between photons and matter. The related process of image formation is considered as noise added to the other two phenomena mentioned before.

Hence, the goal of my thesis is to use the information carried over by the Compton scattering in the image formation process to be able to perform 3D reconstruction. The aim is to use the 5-100keV domain where we might consider Compton scattering as the dominant phenomenon of the image formation process.

Publications

  1. P. Guerrero, M. K. Nguyen, L. Dumas, S. X. Cohen. Three dimensional imaging of flat natural and cultural heritage objects by a Compton scattering modality. Journal of Electronic Imaging, 26(1), Feb 2017.
  2. P. Guerrero, M. K. Nguyen, L. Dumas, S. X. Cohen. Modelling of a New Compton Imaging Modality for an In-depth Characterisation of Flat Heritage Objects. Proceedings of the 9th EUROSIM Congres on Modelling and Simulation, Sep 2016.
  3. K. Rannou, E. Crouzet, C. Ronin, P. Guerrero, G. Thuret et al. Comparison of corneal endothelial mosaic according to the age : the corimmo 3D project. IRBM, 37 (2), Apr 2016.

Oral presentations

  • Avril 2017, III Conférence des Mathématiciens Équatoriens à Paris, Institut Henri Poincaré, Paris, X-ray tomography and Radon transform.
  • Septembre 2016, EUROSIM 2016, Oulu, Finland, Modelling of a New Compton Imaging Modality for an In-Depth Characterisation of Flat Heritage Objects.
  • Mai 2016, Séminaire de jeunes UVSQ,
    Une nouvelle modalité d’imagerie basée sur le rayonnement X diffusé.
  • Mai 2016, CANUM 2016, Obernai,
    Backprojection of a conical Radon Transform in Compton scatter tomography.

Teaching

  • 2016-2017 :
    General mathematics, UVSQ bachelor 1st year mathematics/informatics.
    Work methodology, UVSQ bachelor 1st year mathematics/informatics.
  • 2015-2016 :
    General mathematics, UVSQ bachelor 1st year mathematics/informatics.
    Work methodology, UVSQ bachelor 1st year mathematics/informatics.

Curriculum

  • PhD Candidate, IPANEMA. Thesis title : « Compton 2D Imaging for 3D reconstruction », started on November first, 2014 and supervised by Serge Cohen, Laurent Dumas and Maï Nguyen-Verger.
  • MSc in Applied Mathematics, Jean Monnet University.
  • "Modelling, simulation and characterisation of human endothelial tessellations with Gaussian random fields" in partnertship with École des Mines de Saint-Étienne. 2014. Internship
  • "Development of a road network traffic forecasting algorithm" at Aximum Produits Electroniques. 2013. Internship

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